Brianna http://mail.wikipedia.org/pipermail/foundation-l/2006-May/006995.html
« (fr) Commons:Bistro Maintained, but not very active (6 topics). »
Actually the French Bistro has around 5 new topics per month. The preceding months have been recently archived, and this is why it looks so short.
I like your idea of classifying which language community is active or not. I'll try to write a longer answer to your interesting point of view.
Teofilo